TY - JOUR T1 - Abstract JF - Arboriculture & Urban Forestry (AUF) JO - JOA SP - 231 LP - 231 DO - 10.48044/joa.1975.1.12.231 VL - 1 IS - 12 A2 - , Y1 - 1975/12/01 UR - http://auf.isa-arbor.com/content/1/12/231.abstract N2 - ER -